Stop device for toy motors



Jan. 17, 1933. s. ORKIN sToP DEvIcE FOR TOY MoToRs Filed Feb. 10, 1932 71 fventor W W B, wm

Allomey-f Patented Ja n.17,1 933 i o, o i

I UNITDSTATES PATENT OFFICE SAMUEL ORKIN, OF BEVERLY HILLS, CALIFORNIA, ASIGNOR l'O CALWIS INDUSTRIES,

LTD., OF BEVERLY HILLS, CALIFORNIA, A CORPORATION OF CALIFORNIA ST01=-DEVICE FOR TOY llLO'I'ORSl Application filed February 10, 1932. Serial No. 592,029.4

My invention relates to toy motor ,con-r `Figure is a detail, top plan viewof the structions, and has'particular. reference to a brake shown. in F igure 1; stop device for controlling the starting and F igure'3 is a detail, sectional view, taken stopping'of a spring motor. alongl line III-'III of Figure 1; and

-In my copending application, Serial iNo. ,Figure 4 is a detail sectionalview taken 570,056, filed October 21, 1931, I disclosedV a along line. IV-IV ofFigure 2.` y spring motor for drivingtoys, in which the Referring toV the drawing, I have illuspower of a relatively heavy spring' was aptrated therein a toy motor construction. in y plied through reduction gearing throughv a which a power take-off device 1 is `fixed upon 10 power take-off device adaptable to operate a suitable shaft 2 mounted in bearings 3 and 60 toy boats, and other mechanically drivlen 4 upon an assembly plate 5. The shaft 2 is V tyS arranged to be driven through the agency of a The present invention relates to a new and beveled gear 6 which is engaged bya Second V i novel stopping device in the form of a brake beVGled gear muntedfor rotation between 15 which may be applied tothe power take-off. the as'sembly plate and a top plate 8.

In the art of toy motors, it has beenthe The `gear 7 S llllstrflted aS being drven ,practice to 'apply a stopping device to such thrOugh the agency of suitable reduction motors in one or 'the otherof two ways, gearlng 9 mounted between the plates 5 and namely, to engage la substantially rigid bar Sand in turn connected through a driving with a 'part' of the power take-off device or gear 10 to be driven by a power supply'spring with some of the intermediate gearing, 'or to 11. The spring 11 is shown as being mountapply a spring tensioned friction brake to ed in-V a space between the assembly plate 5 some part of the 'moving apparatus. The and a base plate 12.3 I

first of these constructions is objectionable, As was described'in my` copending appli- 75 however, dueto the positive engagement of cat1on,described above, thefbearing members thel bar with the moving parts of the Vapfor the power take-off device are comprised paratus causing severe 'shock tov the same and by' means of a downwardly struck lug from' creating an objectionable noise, 'while the the plate 5, constituting the bearing member n latter arrangement requiresthe 'employment 3, while'the end of'the plate 5 is bent down- '8d of Springs and necessarily complicated conwardly to constitute one-half of the bearing structions for applying and relieving the member 4. The bearing member is compressure; 1 v pleted` by means of a plate 13 riveted there- It is", herefore, an'object of this invention to as at 14, the plate 13 having a'slot extendto'provide' a stop device for small motor'siin ing vertically from its top surface, while 85 which the brake application is made ina posithe down-turned end of the. plate 5 is protive manner but in which the engagement of vided with a' slot extending from its lower` the brakedeviceis made through a) spring surface so that the assemblage of the two tension, i g I members 4 and 13 constitute a circular bear- 40 Another object of the linventionl is to proing in which the shaft 'may operate. vide a brake deviceas set forth in Vthepreced- The power take-off device lis illustrated ing paragraph in which the brake is applied as providing a composite structure including to some smooth part ofthe moving apparatus .a grooved pulley 15, a spur gear 16 and a so that-objectionable shocks'are not created. brake structure 17 formed integrally with Other objects and advantages will. be apeach other, the rear surface of 'the brakesurparent from a study of the accompanying face 17 being provided with apair ofreardrawing, read in .connection with the ,foll wardly extending lugs 18 which may be emlowing specifioations, wherein' i ployed as in the constructiondescribed in my vFigure 1 isasideelevational view of atoy copending application for the purpose of 59 motor provided with a brake constructed in engaging a fbrake device; ^However, in ;the

accordance' with'my invention; embodimentv of the invention shown herein,

I prefer to employ a smooth cylindrical surface l19 formed upon the brake device 17 immediately at the rear of the gear 16 and to engage this surface by a brake shoe 20 in" such manner that a smooth braking contact is employed between the surface 19 and the shoe 20.

By referring particularly to Figure 1, it will be observed that a brake mounting plate 21 is provided secured to the to'p plate 8, as by meansof screws 22. The'brake' mounting 21 extends longitudinally of the plate 8 and has formed thereon a plurality of ,downwardly struck lugs 23 and 23' spaced from each other to constitute a'slideway for a brake operating rod or bar '24. At intervals along the length of the mounting member 21, I have provided upstanding lugs or ears 25' each of which `is provided with an opening 26 therethrough to vreceive a pivot pin 27 for mounting a brake Operating lever 28. The purpose of providing a 'plurality of the ears 25 is to permit the brake Operating lever to be mounted at'anyone of a number of points along the length of the motor most'convenient to the particular toy or. device to Vwhich my "motor may be'attached. V

' The brakeJ operatinglever 28 is illus'trated as having` at its lower end'a bifurcated arm29 arranged to-surround and engage the outstanding stud 30 formed upon the brakeoperating rod 24, it being understood that there.

will be a plurality of the studs 30 provided along the length of the rod 24 for the purpose of engaging the arm 29 whe-n the lever 28 is mounted in any one of its plurality of positions. V W

By referring particularly to Figure 2, it will be observed that the extreme left-hand ;1b end of the brake Operating rod 274 is turned inwardly, as at 31, to terminate substantially in alignment with the' axis of rotation of the shaft 2. The brake shoe 20 is illustrated as being formed'of a length of strap material,

preferably formed of resilient'material, one

end 32of which is illustrated as being bent downwardly and secured to the inturned end 31 `of the rod 24, as at 33.A The other end of the shoe 20v is illustrated as .being bent down-f wardly and rearwardly upon itself to` present an angular engaging surface to the brake device 17 so that rearward movement of the brake lOperating rod 24 will move the brake shoev out of effectiveV engagement with the:

brake device 17, whilemovement of the rod in'the opposite direction willv cause the brake shoe to engage the brake device with increasing pressure, fdependent upon theamo-unt of v movement given the rod 24.

The bearin'g plate 13 is illustrated as eX- tend-ing considerably' above thelaxis of'the shoe 2 and is provided near its Vupper'end with an outwardly istrucklug34 immediately adj acent the upper surface of the brake shoe V20 soithat this' lug 34 constitutes a bearing against'whichthe force Vof the contact of the Lee-1,416

brake shoe against the brake device maybe received, thusv insuring against distortion of the brake shoe 20, and further insuring that adequate pressure will be brought to bear upon the brake device 17. /The opening operation of the ,brake lever 28 in the opposite direction will cause the brake shoe to be projected to the left, as shown in the drawing,

and thus engage the surface 19.1 The initial contact between the brake shoe 20 and the surface 19 will be slight, due to the angularity of the brake vshoe 20, while further move-V ment of the rod' 24 will increase the pressure of contact between these members and will eXert a sulficient friction retarding force to bring the power .take-off device to rest. However, during the entirelapplication. ofpthe brake, there is no possibility of engagement between any outstanding part of the power the entire application of the brake is Vone of applying smooth contact surfaces to each other andhence no shock is produced by the application of the brake. i

i While I haveshown and described the preferred embodiment of my invention, it

is to be understood that I do not desireV to be limited to any of the details of construction shown or described herein,except as defined in lthe appended claims. i I claim: v f i 1. In a brake vdevice for toy motors having a 'power take-off device,'a brake foperating rod, means mounting said rod for Vmovement parallel to the axis of rotation of said power take-OE device, a brake surface formed 'upon said power take-off device, and abrake'shoe formed of a strip of resilient material secured Vto said brake Operating rod and cmovable i therewith into engagement with said braking surface. i

i 2'; In .a brake device for toy inotors having a power take-off device, a bearing plate for mounting said power take-off device vfor ro-` tation` a brake Operating rod, means mounto ,ing'tsaid rod for movement ini-afdirection parallel to the axis of rotation ofV said power' take-off| device. a brake engaging surface onV said power take-off i device, anopening in said bearing plate, a brake shoe formed .of a

strip 'of' resilient `material 'securedf to said brake Operating rod and projectablexthrough take-off device and the brakeshoe so that.

iso; f

said opening in said plate to engage said braking surface.

3. In a brake device for toy motors having a power take-off device, a brake lOperating rod, means mounting said rod for movement parallel to the axis of rotation of said power take-off device, a brake surface formed upon said power take-off device and a brake shoe secured to said brake operating ,rod andx formed of a strip of resilient material having a portion thereof extending parallel to the aXis of rotation of said take-off device, and having a portion thereof bent back upon itself to form an acute angle with said firstnamed portion.

4:. In a brake device for toy motors having a power take-off device, a bearing plate for mounting said power take-off device for rotation, a brake Operating rod, means mounting said rod for movement in a direction parallel to the axis of rotation of said power take-off device, a brake engaging surface on said power take-off device, a lug struck from said bearing plate and extending toward said power take-off device, and a brake shoe formed of a strip of resilient material secured to said brake Operating rod and projectable through the opening left by said upstruck lug and bearing against said lug' to engage said brake and surface whereby the reactive force of said brake pressure is borne against said lug.

Signed at Los Angeles, California, the 2nd day of February, 1932.

SAMUEL ORKIN. 

